#include<stdio.h>

#define PI 3.1415926 /*define constant*/
//const double PI=3.14l5926;
#define SQUARE(x) x*x /*wrong definition*/
#define F(x) ((x)+(x)) /*normal definition*/
int main()
{
	double r=9;
	double area=PI*SQUARE(r+1);
	//(r+1)+(r+1)*100
	printf("%.f\n",SQUARE(r+1));
	printf("%.5f\n",area);
	return 0;
}
